Added a connexity test

squirrelbattle/tests/mapgeneration_test.py

@@ -0,0 +1,29 @@
+# Copyright (C) 2020 by ÿnérant, eichhornchen, nicomarg, charlse
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import unittest
+
+from squirrelbattle.interfaces import Map, Tile
+from squirrelbattle.mapgeneration import randomwalk
+
+
+class TestRandomWalk(unittest.TestCase):
+    def setUp(self) -> None:
+        self.generator = randomwalk.Generator()
+
+    def test_starting(self) -> None:
+        """
+        Create a map and check that the whole map is accessible from the starting position using a 
+        depth-first search
+        """
+        m = self.generator.run()
+        self.assertTrue(m.tiles[m.start_y][m.start_x].can_walk())
+
+        #DFS
+        queue = m.neighbourhood(m.start_y, m.start_x)
+        while queue != []:
+            y, x = queue.pop()
+            if m.tiles[y][x].can_walk():
+                m.tiles[y][x] = Tile.WALL
+                queue += m.neighbourhood(y, x)
+        self.assertFalse(any([any([t.can_walk() for t in l]) for l in m.tiles]))